We never fly. even before maniacs were taking over planes, I was chicken. Nowadays thats OK because it is SO CHEAP to drive.
I live in Bloomington IN and have two little kids, and we do fine -- 16 hours. You have a choice. You can do one long day or two short. We do two days. We drive MOST of the way the first day and stay in Macon or Valdosta. There are nice, clean, inexpensive hotels all over -- I stay in a little Best Western in Macon for $49. We get in late, watch a little tv, and get to bed. Up early the next morning, free breaskfast, and off we go. We usually get to Mickey right around check-in time.
We save so much money by driving, and I am spoiled by always having my OWN transportation when vacationing. We often go off-property for meals, which saves money too. Gas plus a few fast-food meals plus hotel NEVER comes close to the cost of tickets for 4. The money saved means some years we can visit Mickey TWICE!
Try it! I hate the hassle of the airlines and love being my own "pilot." We come and go when WE are ready and I promise you, you will LOVE having a vehicle at WDW. Good luck!
